[PATCH v4 00/16] spi: s3c64xx: straightforward cleanup

[Tudor Ambarus <tudor.ambarus@xxxxxxxxxx>]

Simple, straightforward patches that were compiled tested.

v4:
- drop "spi: s3c64xx: use bitfield access macros" patch as there was
  no agreement on how the reg fields should be handled.
- don't change the style in s3c64xx_spi_dt_match(), drop just the
  unneeded casts
- collect Sam's R-b  tags

v3:
- reworked the bitfied access macros patch so that the bit operations
  are the same as before the patch. Fix S3C64XX_SPI_PSR_MASK value,
  drop S3C64XX_SPI_CS_NSC_CNT_MASK.
- add a new patches to explicitly remove a duplicated definition and to
  drop a superfluous bitwise NOT operation.
- collect R-b tags

v2:
https://lore.kernel.org/linux-arm-kernel/36a664b1-666d-4fc4-90d9-35b42e56973d@xxxxxxxxxx/

Tudor Ambarus (16):
  spi: s3c64xx: explicitly include <linux/io.h>
  spi: s3c64xx: explicitly include <linux/bits.h>
  spi: s3c64xx: avoid possible negative array index
  spi: s3c64xx: fix typo, s/configuartion/configuration
  spi: s3c64xx: sort headers alphabetically
  spi: s3c64xx: remove unneeded (void *) casts in of_match_table
  spi: s3c64xx: remove else after return
  spi: s3c64xx: move common code outside if else
  spi: s3c64xx: check return code of dmaengine_slave_config()
  spi: s3c64xx: propagate the dma_submit_error() error code
  spi: s3c64xx: rename prepare_dma() to s3c64xx_prepare_dma()
  spi: s3c64xx: return ETIMEDOUT for wait_for_completion_timeout()
  spi: s3c64xx: drop blank line between declarations
  spi: s3c64xx: downgrade dev_warn to dev_dbg for optional dt props
  spi: s3c64xx: remove duplicated definition
  spi: s3c64xx: drop a superfluous bitwise NOT operation

 drivers/spi/spi-s3c64xx.c | 80 +++++++++++++++++++--------------------
 1 file changed, 40 insertions(+), 40 deletions(-)

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2.43.0.594.gd9cf4e227d-goog